These globular apples run to medium-large with a red blush, patchy in places, covering green. There is a little ribbing, and my sample has a few bruises and a spot of the eminently ignorable flyspeck.
The flesh is a creamy white with yellow-green highlights, and at this point in the season (note: mid-November) is tender-crisp and juicy. No acidity to speak of. The flavors are balanced with sweetness predominating, and there are hints of berries and a whiff of spices in the general cidery taste, a distinctive touch.
Brock is a cross between McIntosh and Golden Delicious. Such crosses do not automatically produce an average between parent A and parent B, but if you can imagine the flavors of McIntosh mellowed by those of Gold Delicious, or the even taste of a Golden Delicious enlivened with some of the sprightly qualities of a Mac, you would not be far off the mark for Brock.
This cross is also interesting because it represents the joining of two great lines. Both parents are each in turn the parent of a large family of apple varieties, reflecting the extent to which breeders prize their good qualities.